In A Funny Thing Happened On The Way To The Moon there appears to be some killer proof that the astronauts faked the TV transmissions by filming the earth in a low orbit through a window. (Watch the clip again here).
There is an explanation to this...
Firstly, the video in A Funny Thing Happened On The Way To The Moon, is taken from a live transmission 33:59 GET. It is not "never seen before". Having said that, the images in the video are genuine (it is published on the NASA Apollo 11 Men on the Moon 3 DVD set, disc 1) although I have yet to confirm the "talk" speech on the second copy of this footage.
Now, the basis of the argument in A Funny Thing Happened On the Way To The Moon is that the moon module stays in low earth orbit and doesn't go to the moon. This seems to be disproved in an earlier transmission, 30:28 GET in which you can see the moon from inside a window - and there is definitely no framing of the moon to make it look smaller in that footage. This earlier footage is not even alluded to in the documentary.
The video, below, being NASA footage, is public domain even though it is taken from the DVD set Apollo 11 Men On The Moon, published by 20th Century Fox - Spacecraft Films.
One point to note which might be relevant, or might not, is the difference in the quality of the footage. 30:28 GET is quite poor quality, but the 33:59 GET is extremely good.